Carbon monoxide transformation catalyst carrier, preparation method of the carbon monoxide transformation catalyst carrier, and catalyst based on the carbon monoxide transformation catalyst carrier

A technology for changing catalysts and carbon monoxide, which is applied in the field of coal gasification and can solve problems such as wear, fragmentation, and poor hydration resistance

Active Publication Date: 2013-06-05
FUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the carbon monoxide sulfur-tolerant shift catalyst in the prior art selects aluminum-magnesium spinel as the carrier, and the carrier can only be calcined at 500-650°C to ensure its high specific surface area and stability , but the aluminum-magnesium spinel calcined at this temperature cannot obtain high stability, which makes its anti-hydration performance poor, and it is easy to hydrate during the catalytic process, which further leads to a decrease in the strength of the catalyst and breakage and wear problems, and then provide a magnesium-aluminum spinel carrier that can be used for carbon monoxide sulfur-resistant shift catalysts with high specific surface area and high stability without calcination at high temperature and a carbon monoxide shift catalyst using the carrier

Method used

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  • Carbon monoxide transformation catalyst carrier, preparation method of the carbon monoxide transformation catalyst carrier, and catalyst based on the carbon monoxide transformation catalyst carrier
  • Carbon monoxide transformation catalyst carrier, preparation method of the carbon monoxide transformation catalyst carrier, and catalyst based on the carbon monoxide transformation catalyst carrier

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Effect test

Embodiment 1

[0039] The carbon monoxide conversion catalyst carrier in this example is prepared from the following raw materials:

[0040] Kaolin powder, 5 parts by weight;

[0041] Aluminum oxide powder, 30 parts by weight;

[0042] Magnesium oxide, 10 parts by weight;

[0043] Wherein said kaolin powder has a particle size of 40 mesh and a specific surface area of ​​100m 2 / g; the particle size of the alumina powder is 30 mesh.

[0044] The preparation method of the above-mentioned carbon monoxide shift catalyst carrier in this embodiment includes:

[0045] (1) Fully knead the kaolin powder, alumina powder and magnesia in the above parts by weight;

[0046] (2) Extrude the mixture obtained after fully kneading;

[0047] (3) Dry the extruded product obtained in step (2), the drying temperature is 110°C, and the drying time is 120 minutes;

[0048] (4) Roasting the product obtained in step (3), the calcination temperature is 550° C., and the calci...

Embodiment 2

[0051] The carbon monoxide conversion catalyst carrier in this example is prepared from the following raw materials:

[0052] Kaolin powder, 30 parts by weight;

[0053] Aluminum oxide powder, 60 parts by weight;

[0054] Magnesium hydroxide, 40 parts by weight;

[0055] Wherein said kaolin powder has a particle size of 80 mesh and a specific surface area of ​​140m 2 / g; the particle size of the alumina powder is 40 mesh.

[0056] The preparation method of the above-mentioned carbon monoxide shift catalyst carrier in this embodiment includes:

[0057] (1) Fully knead the kaolin powder, alumina powder and magnesium hydroxide in the above parts by weight;

[0058] (2) Extrude the mixture obtained after fully kneading;

[0059] (3) Dry the extruded product obtained in step (2), the drying temperature is 150°C, and the drying time is 240min;

[0060] (4) Roasting the product obtained in step (3), the calcination temperature is 700° C....

Embodiment 3

[0063] The carbon monoxide conversion catalyst carrier in this example is prepared from the following raw materials:

[0064] Kaolin powder, 5 parts by weight;

[0065] Aluminum oxide powder, 30 parts by weight;

[0066] Magnesium oxide, 10 parts by weight.

[0067] Peptizer, 3 parts by weight;

[0068] Pore-forming agent, 1 part by weight;

[0069] Extrusion aid, 2 parts by weight;

[0070] Adhesive, 1 part by weight.

[0071] Wherein said kaolin powder has a particle size of 50 mesh and a specific surface area of ​​120m 2 / g; the particle size of the alumina powder is 120 mesh. The peptizing agent is nitric acid; the pore-forming agent is oxalic acid; the extrusion aid is squash powder; and the binder is cement.

[0072] The preparation method of the above-mentioned carbon monoxide shift catalyst carrier in this embodiment includes:

[0073] (1) Fully knead the kaolin powder, alumina powder and ma...

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Abstract

The invention provides a carbon monoxide transformation catalyst carrier for a high pressure technology. The carbon monoxide transformation catalyst carrier is prepared from 5 to 30 parts by weight of kaolin powder, 30 to 60 parts by weight of alumina powder and 10 to 40 parts by weight of magnesium oxide or magnesium hydroxide. Through utilization of kaolin powder, alumina powder and magnesium oxide or magnesium hydroxide having a certain ratio as raw materials, magnesium aluminate spinel structure compactness is effectively improved without increasing of a calcination temperature so that catalyst hydration resistance is improved; hydration under working conditions is avoided; high catalyst strength is kept in use; and crushing and wearing phenomenon is avoided.

Description

technical field [0001] The invention relates to a carbon monoxide sulfur-resistant shift catalyst suitable for a high-pressure process, in particular to a carrier, a catalyst using the carrier and a preparation method thereof, belonging to the field of coal gasification. Background technique [0002] Carbon monoxide shift refers to the reaction of CO and water vapor to produce CO in the presence of a catalyst. 2 and H 2 the process of. In the process of using coal or residual oil as raw material to synthesize ammonia, hydrogen and carbonyl synthesis gas, carbon monoxide conversion is an important process, through which the H in the raw gas can be increased. 2 At the same time, reduce the concentration of CO to avoid catalyst poisoning in subsequent processes due to high CO concentration. The carbon monoxide shift catalysts used in earlier technologies were iron-chromium catalysts (Fe 3 o 4 / Cr), because the iron-chromium catalyst has the advantage of low cost, it has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J23/882C01B3/16
CPCY02P20/52
Inventor 江莉龙魏可镁曹彦宁赵文涛刘彦芳谢红
Owner FUZHOU UNIV
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